EP1177058A1 - Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens - Google Patents
Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrensInfo
- Publication number
- EP1177058A1 EP1177058A1 EP00916814A EP00916814A EP1177058A1 EP 1177058 A1 EP1177058 A1 EP 1177058A1 EP 00916814 A EP00916814 A EP 00916814A EP 00916814 A EP00916814 A EP 00916814A EP 1177058 A1 EP1177058 A1 EP 1177058A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- seal
- piston
- sealing
- suction casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 238000004512 die casting Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title abstract description 14
- 238000005266 casting Methods 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract 1
- 239000000155 melt Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
Definitions
- the invention relates to a piston-side seal in die-casting machines which operate according to a vacuum process, in particular according to the vacuum process, and are equipped with a suction gap or suction box.
- the known die casting processes take place according to the cold chamber or, especially for smaller components, according to the warm chamber process. These processes have proven themselves for a variety of parts. However, are high quality Components with minimal inclusions of oxides and impurities are required that guarantee higher dynamic strength values and / or are subjected to a subsequent heat treatment, so a vacuum pressure casting process is preferably used.
- the melt is metered into the filling chamber via a suction pipe located in the weld pool.
- This melt dosing is initiated by applying a vacuum, which is switched on after the mold has been closed by opening a vacuum valve.
- a vacuum which is switched on after the mold has been closed by opening a vacuum valve.
- an additional casting chamber vacuum is also possible for a better and more regulated vacuum effect, as described by the applicant in DE 30 41 340 C 2 as a vacuum die casting method.
- a region to be sealed is the rear side of the piston or piston rod, which is coupled to the casting unit.
- the suction box of the so-called tinsel which is used to remove the thin light metal residues emerging from the back of the casting piston, has proven itself as a seal carrier.
- a seal on a casting piston is disclosed in US Pat. No. 3,009,218; a casting piston with a constant piston diameter over its entire length is proposed.
- damage such as flooding or scoring occurs in the casting chamber; these mechanical impairments also lead to damage to the casting piston.
- the piston seal can also be damaged and the sealing effect is not guaranteed in continuous operation.
- the invention has for its object to propose a sealing system for a casting piston when using the vacuum die-casting method, which ensures a long service life and significantly reduces the risk of an accident.
- an elongated casting piston has at least one shoulder, i.e. smaller diameter, has at its rear end and the seal installed in the suction box is in sealed connection with the piston when it is retracted.
- the seal is to be installed using a non-positive or positive connection and the sealing ring can have a separating point that enables it to be installed or replaced without significant installation measures.
- the chosen casting piston design ensures, on the one hand, that mechanical piston damage does not occur on the smaller seal diameter, since this diameter has no contact with the bore of the casting chamber and, on the other hand, that the casting piston diameter is concentric due to the simple manufacturing process. Furthermore, after a pouring plunger breakdown, which would normally take place in the area of an advanced pouring position, the cooling water could escape through the annular space which is now open to the rear.
- Figure 1 shows the injection system 1 of a Vacural die casting machine which is connected to the fixed platen 3 via armature 2.
- the holding furnace 5 for the liquid melt is arranged between the fixed platen 3 and the stand part 4 of the injection system 1.
- the suction tube immersed in the holding furnace 5 below the molten bath surface is designated by 6.
- the upper end of the suction pipe 6 is connected to the casting chamber 7.
- the casting piston 8 which is connected to the casting piston rod 9.
- the pouring piston rod 9 is connected to the actual pouring unit 10.
- FIG. 2 An enlarged representation of the idea according to the invention is shown in FIG. 2.
- a casting piston 8 which has diameters D1 and D2 of different sizes.
- the smaller diameter D2 is sealed by seal 11 in the retracted position shown, the retracted position corresponding to the operating state in which the melt is sucked in through the vacuum build-up through suction pipe 6, while sealing is no longer required in the forward movement of the casting piston 8.
- Seal 11 is frictionally connected to suction box 13 by means of a clamping ring 12.
- a positive connection can also be selected by the corresponding design of the sealing ring 11.
- a sealing ring 11 that is divided on one or both sides is used, which allows the sealing ring to be replaced only by removing the clamping or retaining ring 12.
- the part of the Sealing ring can be in the form, for example of an oblique joint, whereby an optimal sealing effect is achieved.
- the invention is not restricted to the exemplary embodiment described and illustrated. It also includes all professional designs within the scope of the current claim 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19921496 | 1999-05-08 | ||
DE19921496A DE19921496A1 (de) | 1999-05-08 | 1999-05-08 | Kolbenseitige Absaugabdichtung bei Anwendung des Vakuumdruckgießverfahren |
PCT/DE2000/000764 WO2000067935A1 (de) | 1999-05-08 | 2000-03-10 | Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1177058A1 true EP1177058A1 (de) | 2002-02-06 |
EP1177058B1 EP1177058B1 (de) | 2003-02-19 |
Family
ID=7907580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00916814A Expired - Lifetime EP1177058B1 (de) | 1999-05-08 | 2000-03-10 | Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens |
Country Status (5)
Country | Link |
---|---|
US (1) | US6749005B1 (de) |
EP (1) | EP1177058B1 (de) |
JP (1) | JP2002543982A (de) |
DE (2) | DE19921496A1 (de) |
WO (1) | WO2000067935A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3921513B2 (ja) | 2002-04-17 | 2007-05-30 | 株式会社木村工業 | 成型装置及びそれに用いる型ユニット |
DE202006011541U1 (de) * | 2006-07-27 | 2007-12-06 | Bdw Technologies Gmbh & Co. Kg | Gießkolben |
KR20090126224A (ko) * | 2009-11-02 | 2009-12-08 | (주)엔티티 | 다이캐스팅장치 |
DE102019107325A1 (de) * | 2019-03-21 | 2020-09-24 | Engel Austria Gmbh | Aufschmelzeinheit für eine Formgebungsmaschine und Formgebungsmaschine mit einer solchen |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3009218A (en) | 1958-10-22 | 1961-11-21 | David M Morgenstern | Apparatus for vacuum feeding a die casting machine |
US3254377A (en) * | 1963-04-22 | 1966-06-07 | Glenn R Morton | Fluid cooled, lubricated and sealed piston means for casting devices |
DE3041340A1 (de) * | 1980-11-03 | 1982-05-13 | Maschinenfabrik Weingarten Ag, 7987 Weingarten | Druckgiessverfahren zur herstellung von gasarmer, porenarmer und oxydarmer gussstuecke sowie druckgiessmaschine zur durchfuehrung des verfahrens |
DE3401715C2 (de) * | 1984-01-19 | 1986-02-27 | Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten | Druckgiessverfahren zur Herstellung gasarmer, porenarmer und oxydarmer Gußstücke |
US4886107A (en) * | 1986-02-28 | 1989-12-12 | Zecman Kenneth P | Piston for cold chamber |
US5076344A (en) * | 1989-03-07 | 1991-12-31 | Aluminum Company Of America | Die-casting process and equipment |
DE4101592A1 (de) * | 1991-01-21 | 1992-07-23 | Mueller Weingarten Maschf | Druckgiessmaschine |
DE19754532C1 (de) * | 1997-12-09 | 1999-04-01 | Kunz Konstruktion Und Druckgie | Kupplungsvorrichtung für die Kolbenstange eines Druckgießkolbens |
US6237672B1 (en) | 1998-12-30 | 2001-05-29 | Dbm Industries, Ltd. | Self lubricating and cleaning injection piston for cold chamber injection unit |
-
1999
- 1999-05-08 DE DE19921496A patent/DE19921496A1/de not_active Withdrawn
-
2000
- 2000-03-10 DE DE50001278T patent/DE50001278D1/de not_active Expired - Lifetime
- 2000-03-10 EP EP00916814A patent/EP1177058B1/de not_active Expired - Lifetime
- 2000-03-10 JP JP2000616949A patent/JP2002543982A/ja active Pending
- 2000-03-10 WO PCT/DE2000/000764 patent/WO2000067935A1/de active IP Right Grant
- 2000-03-10 US US09/959,147 patent/US6749005B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0067935A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6749005B1 (en) | 2004-06-15 |
DE19921496A1 (de) | 2000-11-09 |
EP1177058B1 (de) | 2003-02-19 |
DE50001278D1 (de) | 2003-03-27 |
WO2000067935A1 (de) | 2000-11-16 |
JP2002543982A (ja) | 2002-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1819465B1 (de) | Vakuumdruckgussverfahren | |
EP1742752B1 (de) | Verfahren zum giessen von bauteilen aus leichtmetall nach dem kippgiessprinzip | |
EP2184120B1 (de) | Gegossener Stahlkolben für Verbrennungsmotoren | |
DE102006058142B4 (de) | Verfahren und Vorrichtung zum Kippgießen von Bauteilen aus Leichtmetall | |
EP2946852B1 (de) | Vakuumdruckgussanlage und verfahren zum betrieb einer vakuumdruckgussanlage | |
DE3605529C3 (de) | Druckgießverfahren und Druckgießmaschine | |
EP2640537A2 (de) | Druckgussdüse und druckgussverfahren | |
EP1177058A1 (de) | Kolbenseitige absaugabdichtung bei anwendung des vakuumdruckgiessverfahrens | |
DE4005746C2 (de) | ||
WO2017152904A2 (de) | GIEßKAMMER EINER KALTKAMMER-DRUCKGIEßMASCHINE MIT EINER KÜHLVORRICHTUNG SOWIE KÜHLVORRICHTUNG | |
DE19605727A1 (de) | Vakuum-Druckgießmaschine | |
EP3814034A1 (de) | Vorrichtung und verfahren zur herstellung eines aus einem amorphen oder teilamorphen metall gebildeten gussteils sowie gussteil | |
DE4032521C2 (de) | ||
DE102009026450B4 (de) | Gießvorrichtung und -verfahren, insbesondere für Kolben von Verbrennungsmotoren | |
WO2015101552A1 (de) | Verfahren und anordnung zum vakuumblockguss | |
DE102006061653B4 (de) | Grundplatteneinsatz | |
DE202004014151U1 (de) | Vorrichtung zur Herstellung von Formteilen aus Aluminium- oder Magnesiumlegierungen, insbesondere zur Herstellung von Kraftfahrzeugteilen | |
DE202016105609U1 (de) | Kokillenteiler zum Einbau in eine Kokille | |
DE10328654A1 (de) | Gießverfahren für metallische Bauteile | |
DE4314894A1 (de) | Niederdruck-Gießmaschine | |
DE2703148C3 (de) | Anfahrstrang für eine Stranggießkokille | |
DE102016111663A1 (de) | Horizontale Gießkammer, Kit mit einer Gießkammer und einer Einfüllhilfe sowie Verfahren zum Druckgießen von Metall in einer Gießkammer | |
DE102004057325A1 (de) | Vakuumdruckgussverfahren | |
DE19925148A1 (de) | Verhinderung der Oxidation der Schmelze bei einer nach einem Vakuumverfahren arbeitenden Druckgießmaschine | |
DE3943606C2 (de) | Detektionselement für eine Gasabzugsvorrichtung bei einer Hochgeschwindigkeits-Gießvorrichtung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20011020 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR IT LI |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50001278 Country of ref document: DE Date of ref document: 20030327 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: KELLER & PARTNER PATENTANWAELTE AG |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D Ref document number: 1177058E Country of ref document: IE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20031120 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PCAR Free format text: NEW ADDRESS: EIGERSTRASSE 2 POSTFACH, 3000 BERN 14 (CH) |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20180326 Year of fee payment: 19 Ref country code: DE Payment date: 20180323 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20180326 Year of fee payment: 19 Ref country code: IT Payment date: 20180322 Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50001278 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190331 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190331 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190310 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190331 |